Conditions for Running the DTC
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Battery voltage to the HVAC control module is greater than 8.7 V and less than 16.5 V.
- The ignition is turned ON.